function BirthDay() {
	window.setTimeout('BirthDay()', 100)
	let date = new Date('2023/08/07') // 修改出生日期
	today = new Date()
	timeold = today.getTime() - date.getTime()
	sectimeold = timeold / 1000
	secondsold = Math.floor(sectimeold)
	msPerDay = 24 * 60 * 60 * 1000
	e_daysold = timeold / msPerDay
	daysold = Math.floor(e_daysold)
	e_hrsold = (e_daysold - daysold) * 24
	hrsold = Math.floor(e_hrsold)
	e_minsold = (e_hrsold - hrsold) * 60
	minsold = Math.floor((e_hrsold - hrsold) * 60)
	seconds = Math.floor((e_minsold - minsold) * 60)
	span_dt_dt.innerHTML =
		daysold + '天' + hrsold + '小时' + minsold + '分' + seconds + '秒'
}
BirthDay()
